diff --git a/servers/slapd/schema_init.c b/servers/slapd/schema_init.c
index 6a1ab47db0..f88ec4318e 100644
--- a/servers/slapd/schema_init.c
+++ b/servers/slapd/schema_init.c
@@ -351,6 +351,10 @@ struct syntax_defs_rec syntax_defs[] = {
 	{"( 1.3.6.1.4.1.1466.115.121.1.58 DESC 'SubstringAssertion' )",
 		0, NULL, NULL, NULL},
 
+	/* OpenLDAP Experimental Syntaxes */
+	{"( " SLAPD_OID_ACI_SYNTAX " DESC 'OpenLDAPexperimentalACI' )",
+		0, NULL, NULL, NULL},
+
 	{NULL, 0, NULL, NULL, NULL}
 };
 
diff --git a/servers/slapd/slap.h b/servers/slapd/slap.h
index 1351903d8e..35b864562f 100644
--- a/servers/slapd/slap.h
+++ b/servers/slapd/slap.h
@@ -89,7 +89,7 @@ LDAP_BEGIN_DECL
 
 /* schema needed by slapd */
 #define SLAPD_OID_DN_SYNTAX "1.3.6.1.4.1.1466.115.121.1.12"
-#define SLAPD_OID_ACI_SYNTAX "1.1.1" /* bogus */
+#define SLAPD_OID_ACI_SYNTAX "1.3.6.1.4.1.4203.2.1" /* experimental */
 
 LIBSLAPD_F (int) slap_debug;